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vdr-plugin-streamdev/streamdev-server/externremux.sh

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#!/bin/bash
#
# externremux.sh - sample remux script using mencoder for remuxing.
#
# Install this script as VDRCONFDIR/plugins/streamdev-server/externremux.sh
#
# The parameter QUALITY selects the default remux parameters. Adjust
# to your needs and point your web browser to http://servername:3000/ext/
# To select different remux parameters on the fly, insert a semicolon
# followed by the name and value of the requested parameter, e.g:
# e.g. http://servername:3000/ext;QUALITY=WLAN11;VBR=512/
# The following parameters are recognized:
#
# PROG actual remux program
# VC video codec
# VBR video bitrate (kbit)
# VOPTS custom video options
# WIDTH scale video to width
# HEIGHT scale video to height
# FPS output frames per second
# AC audio codec
# ABR audio bitrate (kbit)
# AOPTS custom audio options
#
##########################################################################
### GENERAL CONFIG START
###
# Pick one of DSL1000/DSL2000/DSL3000/DSL6000/DSL16000/LAN10/WLAN11/WLAN54
QUALITY='DSL1000'
# Program used for logging (logging disabled if empty)
LOGGER=logger
# Path and name of FIFO
FIFO=/tmp/externremux-${RANDOM:-$$}
# Default remux program (cat/mencoder/ogg)
PROG=mencoder
# Use mono if $ABR is lower than this value
ABR_MONO=64
###
### GENERAL CONFIG END
### MENCODER CONFIG START
###
# mencoder binary
MENCODER=mencoder
# verbosity from all=-1 to all=9 (-msglevel ...)
MENCODER_MSGLEVEL=all=1
### video part
# Default video codec (e.g. lavc/x264/copy)
MENCODER_VC=lavc
# Default video options if lavc is used (-ovc lavc -lavcopts ...)
MENCODER_LAVC_VOPTS=vcodec=mpeg4
# Default video options if x264 is used (-ovc x264 -x264encopts ...)
MENCODER_X264_VOPTS=threads=auto
### audio part
# Audio language to use if several audio PIDs are available (-alang ...)
MENCODER_ALANG=eng
# Default audio codec (e.g. lavc/mp3lame/faac/copy)
MENCODER_AC=mp3lame
# Default audio options if lavc is used (-oac lavc -lavcopts ...)
MENCODER_LAVC_AOPTS=acodec=mp2
# Default audio options if mp3lame is used (-oac mp3lame -lameopts ...)
MENCODER_LAME_AOPTS=
# Default audio options if faac is used (-oac faac -faacopts ...)
MENCODER_FAAC_AOPTS=
###
### MENCODER CONFIG END
### OGG CONFIG START
###
# ffmpeg2theora binary
OGG=ffmpeg2theora
# speedlevel - lower value gives better quality but is slower (0..2)
OGG_SPEED=1
# videoquality - higher value gives better quality but is slower (0..10)
OGG_VQUALITY=0
# audioquality - higher value gives better quality but is slower (0..10)
OGG_AQUALITY=0
# aspect ratio used for scaling if only one of HEIGHT/WIDTH given (16/9 or 4/3)
OGG_ASPECT='4 / 3'
###
### OGG CONFIG END
##########################################################################
function hasOpt { echo "$1" | grep -q "\b${2}\b"; }
# $1: concatenation of already set option=value pairs
# $2-$n: option=value pairs to be echod if the option is not present in $1
function addOpts
{
local opts="$1"
shift
while [ $# -gt 0 ]; do
hasOpt "$opts" ${1%%=*}= || echo $1
shift
done
}
function isNumeric() { echo "$@" | grep -q '^-\?[0-9]\{1,\}$'; }
function remux_cat
{
startReply
exec 3<&0
cat 0<&3 >"$FIFO" &
}
function remux_mencoder
{
# lavc may be used for video and audio
LAVCOPTS=()
# Assemble video options
VC=${REMUX_PARAM_VC:-$MENCODER_VC}
VOPTS=${REMUX_PARAM_VOPTS}
FPS=${REMUX_PARAM_FPS:-$FPS}
# if only one of HEIGHT/WIDTH given:
# have mencoder calculate other value depending on actual aspect ratio
if [ "$HEIGHT" -a -z "$WIDTH" ]; then
WIDTH=-3
elif [ "$WIDTH" -a -z "$HEIGHT" ]; then
HEIGHT=-3
fi
case "$VC" in
lavc)
LAVCOPTS=(
${VOPTS}
$(IFS=$IFS:; addOpts "$VOPTS" $MENCODER_LAVC_VOPTS)
${VBR:+vbitrate=$VBR}
)
[ ${#LAVCOPTS[*]} -gt 0 ] && VOPTS=$(IFS=:; echo -lavcopts "${LAVCOPTS[*]}")
;;
x264)
isNumeric "$HEIGHT" && [ $HEIGHT -lt 0 -a $HEIGHT -gt -8 ] && ((HEIGHT-=8))
isNumeric "$WIDTH" && [ $WIDTH -lt 0 -a $WIDTH -gt -8 ] && ((WIDTH-=8))
X264OPTS=(
${VOPTS}
$(IFS=$IFS:; addOpts "$VOPTS" $MENCODER_X264_VOPTS)
${VBR:+bitrate=$VBR}
)
[ ${#X264OPTS[*]} -gt 0 ] && VOPTS=$(IFS=:; echo -x264encopts "${X264OPTS[*]}")
;;
copy)
VOPTS=
;;
*)
error "Unknown video codec '$VC'"
;;
esac
# Assemble audio options
AC=${REMUX_PARAM_AC:-$MENCODER_AC}
AOPTS=${REMUX_PARAM_AOPTS}
case "$AC" in
lavc)
LAVCOPTS=(
${LAVCOPTS[*]}
${AOPTS}
$(IFS=$IFS:; addOpts "$AOPTS" $MENCODER_LAVC_AOPTS)
${ABR:+abitrate=$ABR}
)
[ ${#LAVCOPTS[*]} -gt 0 ] && AOPTS=$(IFS=:; echo -lavcopts "${LAVCOPTS[*]}")
# lavc used for video and audio decoding - wipe out VOPTS as video options became part of AOPTS
[ "$VC" = lavc ] && VOPTS=
;;
mp3lame)
LAMEOPTS=(
${AOPTS}
$(isNumeric "${ABR}" && [ "${ABR}" -lt "$ABR_MONO" ] && ! hasOpt "${AOPTS}" mode ] && echo 'mode=3')
$(IFS=$IFS:; addOpts "$AOPTS" $MENCODER_LAME_AOPTS)
${ABR:+preset=$ABR}
)
[ ${#LAMEOPTS[*]} -gt 0 ] && AOPTS=$(IFS=:; echo -lameopts "${LAMEOPTS[*]}")
;;
faac)
FAACOPTS=(
${AOPTS}
$(IFS=$IFS:; addOpts "$AOPTS" $MENCODER_FAAC_AOPTS)
${ABR:+br=$ABR}
)
[ ${#FAACOPTS[*]} -gt 0 ] && AOPTS=$(IFS=:; echo -faacopts "${FAACOPTS[*]}")
;;
copy)
AOPTS=
;;
*)
error "Unknown audio codec '$AC'"
;;
esac
startReply
exec 3<&0
echo $MENCODER \
${MENCODER_MSGLEVEL:+-msglevel $MENCODER_MSGLEVEL} \
-ovc $VC $VOPTS \
-oac $AC $AOPTS \
${MENCODER_ALANG:+-alang $MENCODER_ALANG} \
${WIDTH:+-vf scale=$WIDTH:$HEIGHT -zoom} \
${FPS:+-ofps $FPS} \
-o "$FIFO" -- - >&2
$MENCODER \
${MENCODER_MSGLEVEL:+-msglevel $MENCODER_MSGLEVEL} \
-ovc $VC $VOPTS \
-oac $AC $AOPTS \
${MENCODER_ALANG:+-alang $MENCODER_ALANG} \
${WIDTH:+-vf scale=$WIDTH:$HEIGHT -zoom} \
${FPS:+-ofps $FPS} \
-o "$FIFO" -- - 0<&3 >/dev/null &
}
function remux_ogg
{
VOPTS=${REMUX_PARAM_VOPTS//[:=]/ }
AOPTS=${REMUX_PARAM_AOPTS//[:=]/ }
# if only one of HEIGHT/WIDTH given:
# calculate other value depending on configured aspect ratio
# trim to multiple of 8
if [ "$HEIGHT" -a -z "$WIDTH" ]; then
WIDTH=$((HEIGHT * $OGG_ASPECT / 8 * 8))
elif [ "$WIDTH" -a -z "$HEIGHT" ]; then
HEIGHT=$(($WIDTH * $( echo $OGG_ASPECT | sed 's#^\([0-9]\+\) */ *\([0-9]\+\)$#\2 / \1#') / 8 * 8))
fi
OGGOPTS=(
${VOPTS}
${VBR:+--videobitrate $VBR}
$(hasOpt "${VOPTS}" videoquality || echo "--videoquality $OGG_VQUALITY")
$(hasOpt "${VOPTS}" speedlevel || echo "--speedlevel $OGG_SPEED")
${AOPTS}
${ABR:+--audiobitrate $ABR}
$(isNumeric "${ABR}" && [ "${ABR}" -lt "$ABR_MONO" ] && ! hasOpt "${AOPTS}" channels ] && echo '--channels 1')
$(hasOpt "${AOPTS}" audioquality || echo "--audioquality $OGG_AQUALITY")
$(hasOpt "${AOPTS}" audiostream || echo '--audiostream 1')
)
startReply
exec 3<&0
echo $OGG --format ts \
${OGGOPTS[*]} \
${WIDTH:+--width $WIDTH --height $HEIGHT} \
--title "VDR Streamdev: ${REMUX_CHANNEL_NAME}" \
--output "$FIFO" -- - 0<&3 >&2
$OGG --format ts \
${OGGOPTS[*]} \
${WIDTH:+--width $WIDTH --height $HEIGHT} \
--title "VDR Streamdev: ${REMUX_CHANNEL_NAME}" \
--output "$FIFO" -- - 0<&3 >/dev/null &
}
function error
{
if [ "$SERVER_PROTOCOL" = HTTP ]; then
echo -ne "Content-type: text/plain\r\n"
echo -ne '\r\n'
echo "$*"
fi
echo "$*" >&2
exit 1
}
function startReply
{
if [ "$SERVER_PROTOCOL" = HTTP ]; then
# send content-type and custom headers
echo -ne "Content-type: ${CONTENTTYPE}\r\n"
for header in "${HEADER[@]}"; do echo -ne "$header\r\n"; done
echo -ne '\r\n'
# abort after headers
[ "$REQUEST_METHOD" = HEAD ] && exit 0
fi
# create FIFO and read from it in the background
mkfifo "$FIFO"
trap "trap '' EXIT HUP INT TERM ABRT PIPE CHLD; kill -INT 0; sleep 1; fuser -k '$FIFO'; rm '$FIFO'" EXIT HUP INT TERM ABRT PIPE CHLD
cat "$FIFO" <&- &
}
HEADER=()
[ "$LOGGER" ] && exec 2> >($LOGGER -t "vdr: [$$] ${0##*/}" 2>&-)
# set default content-types
case "$REMUX_VPID" in
''|0|1) CONTENTTYPE='audio/mpeg';;
*) CONTENTTYPE='video/mpeg';;
esac
QUALITY=${REMUX_PARAM_QUALITY:-$QUALITY}
case "$QUALITY" in
DSL1000|dsl1000) VBR=96; ABR=16; WIDTH=160;;
DSL2000|dsl2000) VBR=128; ABR=16; WIDTH=160;;
DSL3000|dsl3000) VBR=256; ABR=16; WIDTH=320;;
DSL6000|dsl6000) VBR=378; ABR=32; WIDTH=320;;
DSL16000|dsl16000) VBR=512; ABR=32; WIDTH=480;;
WLAN11|wlan11) VBR=768; ABR=64; WIDTH=640;;
WLAN54|wlan54) VBR=2048; ABR=128; WIDTH=;;
LAN10|lan10) VBR=4096; ABR=; WIDTH=;;
*) error "Unknown quality '$QUALITY'";;
esac
ABR=${REMUX_PARAM_ABR:-$ABR}
VBR=${REMUX_PARAM_VBR:-$VBR}
WIDTH=${REMUX_PARAM_WIDTH:-$WIDTH}
HEIGHT=${REMUX_PARAM_HEIGHT:-$HEIGHT}
PROG=${REMUX_PARAM_PROG:-$PROG}
case "$PROG" in
cat) remux_cat;;
mencoder) remux_mencoder;;
ogg) remux_ogg;;
*) error "Unknown remuxer '$PROG'";;
esac
set -o monitor
wait
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